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Effect of compressive loads on plasticity induced crack closure

2015Journal article Open access
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dc.contributor.authorAntunes, F.V.
dc.contributor.authorCorreia, Luís M.
dc.contributor.authorCamas, D.
dc.contributor.authorBranco, R.
dc.date.accessioned2017-04-11T16:12:55Z
dc.date.available2017-04-11T16:12:55Z
dc.date.issued2015
dc.description.abstractCompressive stresses play an important role on tension-compression fatigue which can be attributed to plasticity induced crack closure (PICC). The objective here is to study numerically the effect of compressive stresses on PICC and to discuss the applicability of PICC to explain the effect of negative stress ratios on fatigue crack growth rate. The compression produces reversed plastic deformation at the crack tip, reducing linearly the crack opening level. The incursion to negative stress ratios did not produce sudden changes in the behavior of PICC and no saturation with the decrease of minimum load was observed for δKeff. Crack closure was able to collapse da/dN-δK curves with negative stress ratios, indicating the applicability of the crack closure concept to explain the effect of negative R. The analysis of crack tip plastic strain range with and without contact of crack flanks confirmed the validity of crack closure concept.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationANTUNES, F. V. [et al.] (2015) - Effect of compressive loads on plasticity induced crack closure. Theoretical and Applied Fracture Mechanics. ISSN 0167-8442. Vol. 80, p. 193-204 Doi: 10.1016/j.tafmec.2015.09.001pt_PT
dc.identifier.doihttp://doi.org/10.1016/j.tafmec.2015.09.001pt_PT
dc.identifier.issn0167-8442
dc.identifier.urihttp://hdl.handle.net/10400.11/5521
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationNumerical modelling of fatigue crack propagation
dc.subjectFatigue crack growthpt_PT
dc.subjectPlasticity induced crack closurept_PT
dc.subjectCompressive stressespt_PT
dc.subjectNegative stress ratiopt_PT
dc.titleEffect of compressive loads on plasticity induced crack closurept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleNumerical modelling of fatigue crack propagation
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FEME-PME%2F114892%2F2009/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/COMPETE/PEst-C%2FEME%2FUI0285%2F2013/PT
oaire.citation.endPage204pt_PT
oaire.citation.startPage193pt_PT
oaire.citation.titleTheoretical and Applied Fracture Mechanicspt_PT
oaire.citation.volume80pt_PT
oaire.fundingStream5876-PPCDTI
oaire.fundingStreamCOMPETE
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isProjectOfPublication2b90b0cc-120d-49bd-bacd-b15522f57e85
relation.isProjectOfPublicationa5bee73c-f286-4cae-9cf1-b0cebff5d9c0
relation.isProjectOfPublication.latestForDiscovery2b90b0cc-120d-49bd-bacd-b15522f57e85

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